Perfluorohexane fire extinguishing medium

1、 Fire extinguishing mechanism of perfluorohexane

Perfluorohexane fire extinguishing agent is a new type of environmentally friendly, colorless, and non-toxic fire extinguishing agent. The boiling point of this fire extinguishing agent at standard atmospheric pressure is 49.2 ℃, the freezing point is -108 ℃, the dielectric strength is ≥ 110kv, and its insulation performance is extremely high. At room temperature, fire extinguishing agents are in liquid form, greatly improving their storage, transportation, and usage performance, without worrying about frostbite injuries caused by the agents. The fire extinguishing agent is quickly converted into a gaseous state after being sprayed from the nozzle, leaving no residual traces after volatilization. It is non-toxic and harmless to the human body. The potential for depletion of the ODP ozone layer is 0, the GWP greenhouse effect is 1, and the survival life of ALT in the atmosphere is 0.014 years (5 days). The fire extinguishing concentration is 4-6%, making it an excellent substitute for halogenated and HFC fire extinguishing agents.

Perfluorohexane fire extinguishing agent mainly extinguishes flames through the mechanism of physical cooling, and also has the functions of isolating oxygen and chemical inhibition. The fire extinguishing mechanism includes: ⑴ cooling, cooling; ⑵ Isolate oxygen; ⑶ Chemical inhibition.

The fire extinguishing mechanism of perfluorohexane fire extinguishing agent can be summarized as the following "three-step" fire extinguishing mechanism

The first step is to quickly convert the perfluorohexane fire extinguishing agent from liquid to gas after being released from the nozzle, absorb a large amount of heat from the surrounding area, rapidly reduce the surrounding temperature, and eliminate the ignition source (temperature) among the three elements of fire to achieve the fire extinguishing effect;

In the second step, due to the density of 1600kg/m ³ of perfluorohexane fire extinguishing agent, the vaporized perfluorohexane expands and covers the entire protected area, thereby

The third step is that due to the strong stability of perfluorohexane fire extinguishing agent, when the temperature in the protected area increases, it will undergo chemical cracking, and some bonds in the fire extinguishing agent molecules will break, combining with the active free radicals generated during the flame combustion process to block the chain reaction of combustion and play a role in chemically inhibiting fire extinguishing.

In summary, whether applied locally or completely submerged, perfluorohexane fire extinguishing agent has excellent fire extinguishing effectiveness for protected areas. Plays a role in isolating oxygen, reducing the content of combustion aids (oxygen) in the three elements of fire, and achieving a fire extinguishing effect below the combustion concentration

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1、 Perfluorohexane fire extinguishing mechanism Perfluorohexane fire extinguishing agent is a new type of environmentally friendly, colorless, and non-toxic fire extinguishing agent. The boiling point of this fire extinguishing agent at standard atmospheric pressure is 49.2 ℃, the freezing point is -108 ℃, the dielectric strength is ≥ 110kv, and its insulation performance is extremely high. At room temperature, fire extinguishing agents are in liquid form, greatly improving their storage, transportation, and usage performance, without worrying about frostbite injuries caused by the agents. The fire extinguishing agent is quickly converted into a gaseous state after being sprayed from the nozzle, leaving no residual traces after volatilization. It is non-toxic and harmless to the human body. The potential for depletion of the ODP ozone layer is 0, the GWP greenhouse effect is 1, and the survival life of ALT in the atmosphere is 0.014 years (5 days). The fire extinguishing concentration is 4-6%, making it an excellent substitute for halogenated and HFC fire extinguishing agents. Perfluorohexane fire extinguishing agent mainly extinguishes flames through the mechanism of physical cooling, and also has the functions of isolating oxygen and chemical inhibition. The fire extinguishing mechanism includes: ⑴ cooling, cooling; ⑵ Isolate oxygen; ⑶ Chemical inhibition. The fire extinguishing mechanism of perfluorohexane fire extinguishing agent can be summarized as the following "three-step" fire extinguishing mechanism. The first step is that perfluorohexane fire extinguishing agent is rapidly converted from liquid to gas after being released from the nozzle, absorbing a large amount of heat from the surrounding area, rapidly reducing the surrounding temperature, and eliminating the ignition source (temperature) among the three elements of fire to achieve the fire extinguishing effect; In the second step, due to the density of 1600kg/m ³ of perfluorohexane fire extinguishing agent, the vaporized perfluorohexane expands and covers the entire protected area. In the third step, due to the strong stability of perfluorohexane fire extinguishing agent, when the temperature inside the protected area rises, it will undergo chemical cracking, and some bonds in the fire extinguishing agent molecules will break, combining with the active free radicals generated during the flame combustion process, blocking the chain reaction of combustion, and playing a role in chemical suppression of fire extinguishing. In summary, whether applied locally or completely submerged, perfluorohexane fire extinguishing agent has excellent fire extinguishing effectiveness for protected areas. Plays a role in isolating oxygen, reducing the content of combustion aids (oxygen) in the three elements of fire, and achieving a fire extinguishing effect below the combustion concentration

2、 Fire extinguishing scheme for electrochemical energy storage compartment

The electrochemical energy storage compartment fire extinguishing system of Sichuan Qianye Technology Co., Ltd. adheres to the principle of "early detection and early disposal", advocating timely warning and precise suppression of the primary stage of thermal runaway of lithium batteries in the energy storage compartment. While suppressing the fire, the losses caused by the electrochemical energy storage compartment fire are minimized as much as possible.

In terms of fire detection, the common method of arranging smoke and temperature sensors throughout the entire space has been abandoned. Instead, a composite fire detection device using hydrogen, carbon monoxide, and smoke and temperature sensors for energy storage power stations has been adopted, evenly arranged at the top of each energy storage compartment. At the same time, indicators such as temperature, carbon monoxide, battery liquid leakage gas, smoke, etc. inside the compartment are detected and judged through a comprehensive algorithm.

In terms of fire extinguishing, the electrochemical energy storage compartment fire extinguishing system adopts a lithium-ion battery energy storage system automatic fire extinguishing device, which uses perfluorohexane as the fire extinguishing medium and can effectively extinguish fires, cool down, and suppress reignition for up to 24 hours.

3、 Applicable places

According to Chen Qingyun, an academician of the CAS Member, an organic chemist, and a researcher of the Chinese Academy of Sciences Shanghai Institute of Organic Chemistry, perfluorohexanone is a clean gas fire extinguishing agent that mainly uses physical heat absorption to extinguish fire. In addition to its fire extinguishing efficiency, excellent insulation, compatibility, and environmental protection, it also has the advantages of large safety margin, convenient storage and transportation. Suitable for fire places where other fire extinguishing agents are not suitable for extinguishing and where there should be no significant secondary pollution after extinguishing, and for fire protection in enclosed spaces and places with people.

Data processing center, electronic control center, advanced precision instruments, museums, archives, libraries, communication base stations, substations, power grids, high-speed trains, new energy vehicles, ocean going transport ships